1. Arnold VI (1978) Supplementary chapters of the theory of ordinary differential equations. Nauka, Moscow (in Russian)
2. Baird B (1989) A bifurcation theory approach to the programming of periodic attractors in networks models of olfactory cortex. In: Touretzky S (eds). Advs Neural Inf Process Syst 1:459–467
3. Balabaev NK, Lunevskaya LV (1978) Motion along a curve in an n-dimensional space. FORTRAN algorithms and programs. Issue 1. Pushchino, Acad Sci USSR (in Russian)
4. Bautin NN, Leontovitch EA (1976) Methods and techniques of the qualitative analysis of dynamical systems on the plane. Nauka, Moscow (in Russian)
5. Bogdanov RI (1976) Versal deformation of a singular point of the vector field on the plane for a nonzero eigenvalue. In: Works of IG Petrovsky Seminar, Issue 2. Moscow State University Press, Moscow:37–65 (in Russian)